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Minor performance improvement in sqlite3ExprDeleteNN().

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FossilOrigin-Name: bcc8b38ac75b731a4cd2873ab83f423be036467a511b617c779869de9bbb5383
This commit is contained in:
dan
2019-07-10 20:16:53 +00:00
parent 1efcc9dd96
commit 8117f113bc
5 changed files with 41 additions and 32 deletions
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23
src/walker.c
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@@ -63,21 +63,26 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){
if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
assert( pExpr->x.pList==0 || pExpr->pRight==0 );
if( pExpr->pRight ){
assert( !ExprHasProperty(pExpr, EP_WinFunc|EP_Filter) );
pExpr = pExpr->pRight;
continue;
}else if( ExprHasProperty(pExpr, EP_xIsSelect) ){
assert( !ExprHasProperty(pExpr, EP_WinFunc|EP_Filter) );
if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort;
}else if( pExpr->x.pList ){
if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort;
}
}else{
if( pExpr->x.pList ){
if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort;
}
#ifndef SQLITE_OMIT_WINDOWFUNC
if( ExprHasProperty(pExpr, EP_WinFunc) ){
if( walkWindowList(pWalker, pExpr->y.pWin) ) return WRC_Abort;
}
if( ExprHasProperty(pExpr, EP_Filter) ){
if( walkExpr(pWalker, pExpr->y.pFilter) ) return WRC_Abort;
}
if( ExprHasProperty(pExpr, EP_WinFunc|EP_Filter) ){
if( ExprHasProperty(pExpr, EP_WinFunc) ){
if( walkWindowList(pWalker, pExpr->y.pWin) ) return WRC_Abort;
}else if( ExprHasProperty(pExpr, EP_Filter) ){
if( walkExpr(pWalker, pExpr->y.pFilter) ) return WRC_Abort;
}
}
#endif
}
}
break;
}